Healds for a jet loom



Dec. 22, 1964 HIFUM] s rro 3,162,215

HEALDS FOR A JET LOOM Filed Dec. 14, 1962 INVENTOR.

lei MM 1 United States Patent Oil 3, 1 52,2 1 Patented Dec. 22, l 964ice This invention relates to a heald for a jet loom wherein fillingyarn is inserted and conveyed in the shed by a stream of fluid such asair or Water which is jetted across the loom from a nozzle provided onone side of the loom.

proposed that additional nozzles are provided on a lay beam of a jetloom, and air is jetted from the nozzles 1n the shed through the planeof warp yarns and join with said main stream of fluid to assisttransportation of the filling yarn.

The main object of this invention is to provide a heald yarns.

The intention will be furtherdescribed with reference to theaccompanying drawing, wherein loom parts are not shown as they may beany suitable usual construction and not part of the present invention.

In the accompanying drawing which illustrates a con struction of healdand functional parts thereof according to this invention,

FIG. 1 is a vertical sectional view of a heald and a lay beam;

FIG. 2 is a front view of the according to this invention;

FIG. 3 is a view similar to that of FIG. 2 of another embodiment of thisinvention; and

*IG. 4 is a plan view showing the relation between the right hand end ofa heald additional air nozzles and Warp yarns when the nozzlesare in aposition adjacent the warp yarns.

Referring to FIG. 1, 1 designates the plane of warp yarns arranged on aloom, and they make a shed 3 when they are vertically pulled up and downby healds 2 as usual. A nozzle 4 which jets a carrier fluid such as airor water is provided at one side of the loom, abutting against the shedto be made by the warp yarns at the moment when the lay beam is nearlyat the most forward posi- The nozzle is connected with a high pressureflui source, and a flexible pipe, not shown, i employed if the nozzle isprovided on the lay beam 5 as it reciprocates toward and away from thefront of the loom. The incoming end of a filling yarn 6 which has beendrawn out from a bobbin, not shown, in a definite length at the timeimmediately prior to each jet of fluid from the main nozzle 4 is drawnfrom the nozzle by a jet of carrier fluid.

An air pipe or pipes 7 'are mounted on a lay beam 5 and/or reed ca-p 5a,and are connected to an air pres sure source through a flexible pipe orpipes. Each of pipes 7 has one or more nozzles 8 directed in an obliquedirection so as to jet an air stream along the direction of the mainstream.

a The air streams jetted from the additional air nozzles join with themain stream in the shed, and make a long and strong jet suflicient totransport a filling yarn across the loom.

, In the pipes which connect the nozzles and their pressure source areprovided valves, which control the opening of the pipes in connectionwith the rocking motion of the lay beam, whereby the fluids are jettedinto the shed at the time when filling yarn is to be inserted therein.The incoming end of the filling yarn is quickly transported in the shedby the combined jet, and is beaten by the lay beam 5 at the beat-up yarnis tensioned.

In FIG. 2, 1i) and 10a denote respectively a pair of bars provided alongthe upper and lower sides of heald frame for holding the ends of healdwires, and an eye 12 is provided on each wire to guide a Warp yarn. Acertain number of wires at the position corresponding to the additionalair nozzles on the lay beam provides an eye ran position 9 when thefilling at a little different level from the eyes 12 of other Wires, 1

and the wires having an eye at the same level tively fixed on the pairof bars 10 and ltla.

In operation of the loom, two healds are pulled in the opposite verticaldirection to make a shed 3 in the warp yarns as usual, and the smallnumber of eyes 10a position certain warp yarns at a different level fromothers so that a vertical clearance 13 is made in the plane of warpyarns as shown in FIGS. 1 and 4. The additional air nozzles are directedinto these clearances as shown in FIG. 4 to facilitate jetting ofadditional air streams.

If there is only one additional air nozzle on the lay beam, all wires oneach side of the position correspond ing to the air nozzles can bemounted on the heald frame so as to place their eyes at differentlevels, so that a single vertical clearance is formed at the border.

In an embodiment of the invention shown in FIG. 3, the eye of a numberof Wires at the corresponding position to the adidtional air nozzles iselongated as at 14 with the ends of the elongated eyes extending tolevels different from those of other eyes, so that a vertical clearanceis formed in warp yarns at the position of the long eyes.

In the embodiment shown in FIGS. 2 and 3,'two groups of wires aremounted on one heald frame, but each group of wires may be mounted ondifferent frames, and they are piled up and fixed so as to place theireyes at different levels.

I claim:

1. A heald for a jet loom having a nozzle for carrying a weft yarnthrough the shed in a stream of fluid and having at least one additionalnozzle on the beat up means for directing a stream of fluid in thedirection of the stream of fluid produced by the weft yarn nozzle, saidheald comprising a plurality of heald wires each having an eye therein,the eyes in at least one group of adjacent heald Wires which arepositioned intermediate the heald wires at the ends of the heald havingat least part of the peripheries of the eyes offset in one directionfrom the eyes in the remainder of the heald wires in the direction ofthe length of the heald wires, all of the peripheries of the eyes in thegroup being off-set in the same direction, whereby the warp yarnsextending through the eyes in said group of heald wires are lifted outof the plane of the shed to produce an opening in the shed through whichthe additional nozzle can direct the stream of fluid toward the streamof fluid produced by the weft yarn nozzle.

2. A heald as claimed in claim 1 in which the eyes in said heald wiresare substantially round and the eyes in said group of adjacent wires arecompletely off-set from the eyes in the remainder of heald Wires.

3. A heald as claimed in claim 1 in which the eyes in said remainder ofheald wires are substantially round, and the eyes in said group ofadjacent heald wires are elongated and have part of the peripheriesoffset from the eyes in the remainder of the heald wires in onedirection of the length of the heald wires and have the remainder of theperipheries offset from the eyes in the remainder of the heald wires inthe other direction of the length of the healed wires.

4. A heald as claimed in claim 1 in which there are a plurality ofgroups of adjacent heald wires, the eyes in all of the heald wires beinground and the eyes in the groups being offset from the eyes in theremainder of the heald wires in the same direction.

are respec- 5. In a jet loom having a nozzle for carrying a weft fromthe eyes in theremainder of heald wires, and there yarn through the shedin a stream of fluid, the combinaare a plurality of at least twoadditional nozzles, one on tion of abea-t up means having at least oneadditional nozthe upper part of the beat up means and one on the zlethereon for directing a stream of fluid in the direclower part of thebeat up means, the nozzle on the lower tion of the stream of fluidproduced by the weft yarn 1102- 5 part of the beat up means being ofisetfrom the nozzle on zle, and a heald comprising a plurality of healdwires the upper part of the beat up means in the direction of eachhaving van eye thereimtheeyes in at least one group the Weft by adistance ejqualto the length of the group of adjacent heald wires whichare positioned intermedi of adjacent wires and being substantiallyaligned with the ate the heald Wire's at the ends of the heald andadjacent 1 group of adjacent wires in the direction of the length of theend of said additional nozzle having at least part of: 10 the wires. theperipheries of the eyes offset in one direction from l the eyes in theremainder of the heald wires in the direc- RefQI'EFXCeS Cited in thefile of this P j tion of the lengthof the heald wirgs, all of theperipheries 7 V UNITED STATES PATENTS h of the eyes in the group'beingio set in the'same direc v a r a g a tion, whereby the warp yarnsextendingthroug'h the eyes 15 2 T i kf:'f' ""f"fff 1917? in said groupof heald wires are lifted out of the :plane V FOREIGN PATENTS I of theshed and the additional nozzle can direct the stream 203 3 9 GreatBTitain i, e 3 92 of fluid toward the stream of fluid produ'cedabyr theweft 860 979 Great Bri i H F 1.5, 1961': yarn nozzle through theopenings in the shed. I 626 594 Canada H a u 29 [19 1 6. The combinationas claimed in claim 5 in whic'h't-he 20 r 1,2 1,4 3 7 France A 19611eyes in said heald wires'are substantially round and the 286,711 GermanyOct. 8;19 l2 eyes in said group of adjacent wires are completely 'ofiset597,104 7 Germany .1.

UNITED STATES PATENT OFFICE (:ERTIEIEATE 0 EQRR CTIQN Patent No.3,162,215 i December 22, 1964 I I Hifumi Saito I I It is herebycertified that error appears in the above numbered patent requiringcorrection and that the said Letters Patent should read as correctedbelow I In the grant, line 3, for "Fukuoka-ken, Japan," read Fukui-ken,Japan; in the heading to the printed specification, lines 3 and 4, for"Fukuoka-ken, Japan (14-10 Naka suji, Harue-cho, Fukui-ken, Japan)" read14-10 Nakasuji, Harue-cho,fFuKui-ken, Japan Signedand seal-ed this 10thday 0 f A ugus,t 1965.,

(SEAL) Attest:

ERNEST w. swIDER v EDWARDIJ. "BRENNER Altesting Officer I Commissionerof latents

1. A HEALD FOR A JET LOOM HAVING A NOZZLE FOR CARRYING A WEFT YARNTHROUGH THE SHED IN A STREAM OF FLUID AND HAVING AT LEAST ONE ADDITIONALNOZZLE ON THE BEAT UP MEANS FOR DIRECTING A STREAM OF FLUID IN THEDIRECTION OF THE STREAM OF FLUID PRODUCED BY THE WEFT YARN NOZZLE, SAIDHEALD COMPRISING A PLURALITY OF HEALD WIRES EACH HAVING AN EYE THEREIN,THE EYES IN AT LEAST ONE GROUP OF ADJACENT HEALD WIRES WHICH AREPOSITIONED INTERMEDIATE THE HEALD WIRES AT THE ENDS OF THE HEALD HAVINGAT LEAST PART OF THE PERIPHERIES OF THE EYES OFFSET IN ONE DIRECTIONFROM THE EYES IN THE REMAINDER OF THE HEALD WIRES IN THE DIRECTION OFTHE LENGTH OF THE HEALD WIRES, ALL OF THE PERIPHERIES OF THE EYES IN THEGROUP BEING OFF-SET IN THE SAME DIRECTION, WHEREBY THE WARP YARNSEXTENDING THROUGH THE EYES IN SAID GROUP OF HEALD WIRES ARE LIFTED OUTOF THE PLANE OF THE SHED TO PRODUCE AN OPENING IN THE SHED THROUGH WHICHTHE ADDITIONAL NOZZLE CAN DIRECT THE STREAM OF FLUID TOWARD THE STREAMOF FLUID PRODUCED BY THE WEFT YARN NOZZLE.